baber/WOPTO huggingface dataset:
Patent DE-4128830-A1 (DE)
Title: 2,6- and 2,7-di:tert. butyl-anthracene prodn. - by acidic Friedel-Craft anthracene alkylation with separate recovery of isomers
Inventor: HENKELMANN JOCHEN DR
IPC: C07C15/28
Filed: 1991-08-30
Abstract: Prepn. of 2,6- and 2,7-di-t.Bu-anthracene (I) by anthracene (II) alkylation in presence of an acid is effected by (i) reacting (II) with a t.Bu halide or isobutene in a non-polar, aprotic solvent in presence of an acid catalyst; (ii) removing the catalyst and ppted. 2,6-(I) opt. after cooling; and (iii) isolating the 2,7-(I) isomer from the mother liquor. ADVANTAGE - The isomers are obtd. separately in direct fashion without the difficulties associated with the prior-art method of J. Gen. Chem USSR, 22, (1986) p527-31. Also the catalyst can be recyled. In an example, dropwise addn. over 3-4 hrs. of 1.2 mols. t-BuCl to a mixt. of 89g (0.5 mol.) (II), 0.03 mol. AlCl3 and 300 ml CCl4 at 65-67 deg.C, followed by hot filtering to remove the catalyst, recovering the 2,6-isomer, and recrystallising the remaining mother liquor from 500ml EtOH to give the 2,7-isomer resulted in a 60.7g(41%) yield of 2,6-isomer(99% content) and a 58.3g(35%) yield of 2,7-isomer(87% content)
Patent DE-4135435-A1 (DE)
Title: Strip line, comb type filter - is in form of screened strip line in resonator up to capacitor terminals
Inventor: GRAF ULRICH DIPL ING
IPC: H01P1/203
Filed: 1991-10-26
Abstract: The resonator ends of the comb line filter are coupled to an earth electrode via length redn. capacitors. In the region of the resonators, the filter is formed as a screened strip line up to the capacitor terminals. In the capacitor region it is in the form of an unscreened microstrip. Pref. the screened strip line consists of a dielectric main substrate and a dielectric cover substrate with external interconnected metal earthing electrode. Between the substrates lies a filter line structure. The main substrate in addition carries the section of the unscreened microstrip. USE/ADVANTAGE - For printed filter resonators on glass fibre for ceramic substrate, with highly compact design.
Patent DE-4203297-A1 (DE)
Inventor: LEHMANN DIETER DIPL CHEM DR RE
IPC: C08K5/3412
Filed: 1992-01-31
Abstract: A polyurethane and/or polyurethane-urea elastomer in the form of a melt which is (thermo)stable on processing and can be processed immediately or can be processed by re-melting after cooling and storage is proposed. The elastomer is prepared by a polyaddition or additive reaction of relatively long-chain diols with diisocyanate, chain extenders and a polar gelling and/or melting auxiliary to form the melt which is (thermo)stable on processing.
Patent DE-4207205-A1 (DE)
Title: Alternating transmitter for analog and/or digital signals - has base station and associated opposite station as transceiver units
Inventor: VOIT STEFAN
IPC: H04B1/38
Filed: 1992-03-09
Abstract: The transmitter operates between a basic station and an opposite one (3). The two stations are in the form of the transceivers, with the opposite station comprising a microphone (7) and a loudspeaker (8). The alternating signal transmission between the basic station (2) and the opposite one is of wireless type. The basic station is coupled to an end stage (5) by a fixed line (4), providing the energy supply for the basic station and taking over the further conduction of the signals. IR waves (6) are used for the alternating transmission of signals between the basic and opposite stations. The latter may be in the form of a mobile transceiver with a telephone handset. USE/ADVANTAGE - For monitoring house and garage doors and for car telephones, with low-cost mfr. and assembly.
Patent DE-4210628-A1 (DE)
Title: Combustion engine output limitation at max permitted road speed - using two independent indications of road speed as precaution against illegal manipulation
Inventor: HEIDENREICH ANDREAS
IPC: B60K31/00
Filed: 1992-03-31
Abstract: The admissible ranges (unshaded on the diagram) of the ratio of the engine speed in rev/min to road speed in km/h for six forward gears and one reverse gear are stored in the memory of the controller which sets the max. power output. One of the road speed signals may be derived from the rotational speed of the rear axle. The other may be deduced from the output shaft speed of the electronically controlled automatic transmission with allowance for rear axle ratio and tyre circumference. ADVANTAGE - Possibility of raising limit by manipulation of either of independent road speed signals is avoided.
Patent DE-4211667-A1 (DE)
Title: Biological processing of household waste in enclosed dumps - using controllable aerobic and anaerobic processes in waste units penetrated by gas and fluid transporting pipe systems
IPC: E02D31/00
Filed: 1992-04-07
Abstract: Waste, esp. household waste, is handled within a partly or completely enclosed waste unit. Within the unit biological reaction (speeded up) are initiated. The resulting gases are collected in the top region of the unit and piped off, while water seeps through to the bottom region and is led off. The waste unit, which is built on site, comprises flat horizontal (5) and cylindrical vertical regions (10) of porous material, accessible from the outside by means of pipe systems (6,7,9) which transport the biological decomposition products from the unit or deliver any necessary nutrients, air or water to speed up the reaction. The pipe systems (6,7,9) are divided into separate gas and fluid systems and where they occur in the horizontal layer (5) the gas transporting pipes (7) are arrayed below the fluid transporting pipes (6). The vertical (10) and horizontal (5) regions pipe systems are independent. The waste unit has a temporary cover (13). USE/ADVANTAGE - The process is carried out on site and produces composted inert end products. In comparison with the main alternative of incineration there are no dangerous air emissions.
Patent DE-4219292-A1 (DE)
Inventor: BUBIK ALFRED DIPL ING DR
IPC: D21F9/00
Filed: 1992-06-12
Abstract: On the twin-wire former of a papermachine, one endless wire (1) is brought together with the second wire (2) on an at least partially curved guide surface (4), which can be moved frictionally relative to the wires. This drainage region described is followed by a further guide surface (7) which, in advantageous embodiments, has the opposite direction of curvature and is spatially fixed. <IMAGE>
Patent DE-4219432-A1 (DE)
Title: Vibration damped contact carrier element for switching devices - has leaf spring contact arm that is displaced against fixed projection with curved profile.
Inventor: GANSER OTMAR
IPC: H01H1/50
Filed: 1992-06-13
Abstract: The arrangement has an electrical contact unit with a pair of contact (6,7) leaf spring carriers (1,2). The ends of the carriers are embedded within a main housing block (5). One of the carriers is displaced by a sliding element (8) until the two contacts engage. Located between the contact carriers is a formed projection (9) that is some 55-85 percent of the length of the carriers and has a curved profile. As the one contact carrier is deformed the unit provides a controlled damping force. USE/ADVANTAGE - For e.g. idling speed contact, setting throttle flap of IC engine. Provides vibration damping of contact system. Exact contact making also under conditions of externally produced vibration.
Patent DE-4219549-A1 (DE)
Title: Welding components - using vibration exciters to produce periodically varying gap at weld spot
Inventor: SOKOLOWSKI WALDEMAR DIPL PHYS
IPC: B23K26/035
Filed: 1992-06-15
Abstract: Components, in particular, those with coatings are welded with the use of a device producing a gap at least at the weld location. The device incorporates at least one unit connected at least to one component - directly or by means of one or several force transfer elements - and sets it in an alternating motion. The gap produced by the motion allows evaporated coating material to escape from the weld location. The device for producing a gap pref. incorporates at least one vibration exciter connected at least to one of the components undergoing welding. Vibrations are pref. produced by mechanical, acoustic, elecric or magnetic means, or by a combination of such means. Vibrations produced by the exciter pref. have a constant frequency and/or amplitude. Alternatively, the frequency and/or amplitude is varied in accordance with process parameters. USE/ADVANTAGE - In the motor vehicle industry, for example. It does not require preliminary preparation of the components, and is applicable to components independently of their geometrical shape.
Patent DE-4227065-A1 (DE)
Title: Hydropneumatic hammer drill for mining and road construction - has stepped diameter striking piston which divides cylinder into four chambers and permits short passages between valve and cylinder
Inventor: SONG KYO-MYUNG
IPC: F15B11/15
Filed: 1992-08-15
Abstract: The hammer drill has a piston (40) which, under control of a directional control valve, travels backwards and forwards to strike the end of a chisel held co-axially in the front tool head. The piston has stepped diameters which effectively divide the cylinder into four chambers. The first chamber (43) has a passage (47) to pressurised oil inlet (21), a second chamber (46) with passage (PD) connecting to an oil return outlet (22), a third chamber (44) defined by the last step (42) of the piston and the fourth chamber (60) which is divided off from the third chamber by a sealed guide sleeve (49) and is filled with an inert gas under pressure. Parallel to the cylinder bore is a chamber (50) for a hollow sliding valve spool (50) which, as part of a self-actuating cycle, reciprocates to control the flow of oil to the first and third cylinder chambers and thereby drives the piston. ADVANTAGE - Simple, low-cost and lightweight design. Reliable and energy efficient.
Patent DE-4233633-A1 (DE)
Title: Lightweight insulation brick for housing and industrial construction - has an insulation core with inner supports within a hard brick cladding shell
Inventor: LUECKE HANNS W
IPC: E04C1/41
Filed: 1992-10-06
Abstract: The lightweight insulation building brick has an inner core (4) and a solid or partially hard body cladding (2) such as of concrete. The core is wholly or partially of a material which gives thermal, cold and/or acoustic insulation such as a hard foam block (4) or a honeycomb structure in a hard body such as of concrete/cement. The honeycomb structure is wholly filled with the insulation material (4). USE/ADVANTAGE - The building brick, for housing and industrial construction, is for insulation against heat and cold, and sound, with the mechanical properties required for building. The brick is light weight, giving insulation within the whole wall structure in all directions round it, with sufficient strength to be used in tall buildings as well.
Patent DE-4234718-A1 (DE)
Title: Wrapping insulation bandage around metal tube and process plant - involves joining short tubes into single continuous tube prior to wrapping and supporting tubes on rollers which can be raised or lowered when an end sleeve passes
Inventor: BAUR FRITZ
IPC: F16L59/02
Filed: 1992-10-15
Abstract: In a process for wrapping individual metal tubes having sleeved ends with a continuous band (22), the tubes are joined together to form a single long tube (6) which runs through the wrapping station (2). After wrapping, the long tube (6) is divided again into short lengths. The speed of wrapping and the axial tube speed are related. The continuous tube (6) passes over several supporting roller stations (3, 4, 5) each with at least two support rollers (25, 37). The roller (25, 37) arrangement allows one roller to be raised to support the tube (6), while the other is simultaneously lowered to allow unhindered passage of a sleeve (7). Claimed wrapping appts. includes: (i) a frame (17) supporting a winding station (2) with at least two drums (21) holding the wrapping band (22); (ii) one or more band haul-off units (18) which move around the tube axis; (iii) roller stations (4, 5) positioned in front of and behind the winding station (1) with at least two rollers (25, 37) at a distance from each other and a control unit for alternately raising one roller (25) or the other; (iv) one or more drive rolls (32) for forward movement of the tube (6). USE/ADVANTAGE - For wrapping metal tubes with corrosion protection bandage. Allows wrapping of both sleeved and sleeveless tubes.
Patent DE-4235634-A1 (DE)
Title: Servo-assisted rack=and=pinion vehicle steering - has servo cylinder attached to rack housing with crimped end seal over steering shaft
Inventor: BREITWEG WERNER
IPC: B62D5/12
Filed: 1992-10-22
Abstract: The simplified servo steering has the servo cylinder (11) attached to the rack housing (1) at one end and the other end is turned inwards to form a locating lip (27) for the cylinder seal (25,30) for the servo. The inside face of the turned-over section also has a locating groove for a shaft seal for the steering shaft (10). The seal support is produced by rolling over the end of the cylinder, which comprises a simple metal tube. The outer end of the rolled-over section has a locating surface for securing the steering gaiter. USE/ADVANTAGE - The one-piece construction of the piston and piston rod allows simple, low cost mfr. of vehicle steering gear with min. no. of complicated machine components.
Patent DE-4237809-A1 (DE)
Title: Mechanism for subsequent enlargement of chimney cross-section - has guide region section in front of cutting region in feed direction of original chimney diameter
Inventor: EICHL KONRAD
IPC: F23J3/02
Filed: 1992-11-05
Abstract: The mechanism consists of a cutting and a guide region. In front of the cutting region (14) in the feed direction is a section (12), serving as the first guide region with a dia. corresp. to the original chimney cross-section. Pref., in the cutting region are uniformly, peripherally distributed diamond or hard metal cutting edges (13). Several cutting region diameters are arranged in steps in the feed direction. The cutting edges may be exchangeable. The drive motor is typically fitted on a frame insertable onto the chimney end. It is connectable to a linkage for feed motion. ADVANTAGE - Precise boring or milling along a preset axis.
Patent DE-4239727-A1 (DE)
Inventor: HEINEMANN ULRICH DR
IPC: C07D417/04
Filed: 1992-11-26
Abstract: The invention concerns new pyridyl-1,2,4-thiadiazoles of formula (I), in which R<1> is an optionally substituted pyridyl group and R<2> is an optionally substituted aryl group, plus their acid addition salts and metal-salt complexes. The invention also concerns a method of preparing such compounds and their use as pest-control agents. In addition, the invention concerns 5-arylalkylthio-1,2,4-thiadiazoles of formula (II) and 3-pyridyl-1,2,4-thiadiazolin-5-thiones of formula (III), in which R<1> and R<2> are as defined above, plus methods of preparing these compounds and their use as intermediates.
Patent DE-4240098-A1 (DE)
Inventor: PEES ERNST DIPL-ING
IPC: B61F5/32
Filed: 1992-11-28
Abstract: On undercarriages for railway vehicles with at least four wheelsets which are combined into trucks, the invention teaches that force-controlled or displacement-controlled actuators are located on the end wheelsets of the trucks. These actuators thereby act on the wheelset bearings, and in terms of their effect, they are connected in parallel, in the case of the force-controlled actuators, and in series, in the case of the displacement-controlled actuator with a wheelset restraint. This system makes possible a controlled rotation of the wheelset in relation to the truck frame.
Patent DE-4301519-A1 (DE)
Title: Device for making ground firm for earth preparation and pre seeding - has one or more stamping elements rotatably mounted on horizontal axis and having radially protruding stamping surfaces set spaced around circumference
Inventor: HENDLMEIER KONRAD
IPC: A01B49/00
Filed: 1993-01-21
Abstract: The stamping element used is mounted and rotates on a horizontal axis and protrudes radially outwards. It's cross section changes radially from the inside, where it is a stamp part (21), to the outside, where it is a stamping body (26). On the exterior circumference (20) are several working surfaces (27), these project a greater surface area in the radial direction for the stamping body than the cross sectional surface of the stamp part. The distance between two elements set axially on an axis is the same or greater than the distance between two stamp parts around the circumference. The horizontal axes are connected and driven together by chains or cardan links. USE/ADVANTAGE - It is trouble free to work and is effective even on sticky ground and prevents sticking of the work surfaces and the chambers in between the work surfaces.
Patent DE-4302359-A1 (DE)
Title: Visual aid
Inventor: WORCH HELLMUT DR
IPC: G02C7/06
Filed: 1993-01-28
Abstract: The human eye, in particular in people over forty years of age, can adapt from bright to dark conditions and simultaneously accommodate to near vision only to an insufficient extent. The reverse is also the case. However, it is just this performance of the eye which is required when driving a motor vehicle, for constant change between viewing the bright carriageway with a long-distance adjustment of the eye and the near vision of the far darker instrument panel. To date, this problem has obviously not been sufficiently recognised and in consequence has not been taken into account by any visual aid.   Although sunglasses reduce the risk of dazzling, they cause, however, the near-vision possibility of the eye to deteriorate in darker areas since the interval for adaptation is too large for simultaneous short-term accommodation. The eye is therefore not capable of simultaneously carrying out the two functions in an optimum manner. The visual aid according to the invention entirely solves this physiological problem by subdividing the field of vision for example of spectacles into an upper area (A) which has a lesser transparency for the brighter distant vision than the lower area (B) of said spectacles. At the same time, the lower area is optically adjusted to near vision according to individual requirements and therefore has, as a rule, a higher positive dioptre correction than the upper area. <IMAGE>
Patent DE-4305850-A1 (DE)
Title: Reference voltage generator e.g. for DRAM integrated circuit - has constant current source and negative feedback circuit with resistors and second FET in series between amplifier output and feed potential
Inventor: FURUTANI KIYOHIRO
IPC: G05F1/46
Filed: 1993-02-25
Abstract: In the reference voltage generating circuit with improved temp. compensation, a PMOS transistor forming a constant voltage circuit has the same characteristics as a second PMOS transistor, forming a negative feedback circuit. As soon as the ambient temp. changes, the gate-source voltage and the drain-current characteristics of the transistors are shifted. By appropriate adjustment of the transistor drain currents, however, the temp. compensation takes place. The temp. compensating transistors are identically mfd. so that the temp. compensation is achieved without extra mfg. steps. USE/ADVANTAGE - For internal voltage converter in a semiconductor module, without extra mfg. steps, preventing deviations of resistance value effecting output voltage.
Patent DE-4312014-A1 (DE)
Title: Device for coating and/or etching substrates in a vacuum chamber
Inventor: MAHLER PETER
IPC: H01J37/30
Filed: 1993-04-13
Abstract: In a device for coating and/or etching substrates (2, 2', ...) in a vacuum chamber (4), having a coating source, for example a cathode (17, 17') having a target (18, 18'), a substrate holder (8) which can be displaced relative to the coating source, a power supply device and a plate or diaphragm (16) which can be displaced in the interspace between the source (17, 17') and the substrate carrier (8), the source (17, 17') is arranged on the inside of the chamber door (3), it being possible for the diaphragm to be displaced, in a plane parallel to the plane of the substrates (2, 2', ...) in which the diaphragm (16) covers the substrates (2, 2', ...) and the source only acts on the diaphragm (16), from a quiescent position outside the region of action or rotation of the source, by means of a lifting device (13, 13', 20, 22, 25). <IMAGE>
Patent DE-4312730-A1 (DE)
Inventor: STOLL KURT
IPC: F15B13/00
Filed: 1993-04-20
Abstract: A valve assembly is proposed which can be used in connection with the control of fluid-actuated devices (1). It contains at least two fluid distributors (3, 4) which are arranged to follow one another in a mounting direction (5) and are of different construction from one another at least due to the different configurations of their mounting sides (37, 37') facing one another. They serve to fit valves (6, 7) of different basic type. An adapter part (35) is provided between two dissimilar fluid distributors (3, 4) of this type which follow one another. The adapter part (35) connects these fluid distributors (3, 4) and if need be interlinks internal fluid passages (17, 17'; 26, 26'). In this way, valve assemblies (2) can be constructed which contain various types of valves (6, 7). <IMAGE>
Patent DE-4315190-A1 (DE)
Inventor: VOELCKER ALEXANDER DIPL PHYS D
IPC: C22C5/08
Filed: 1993-05-07
Abstract: Cadmium-free brazing solders which also have working temperatures under 630 DEG  C. containing 45 to 80 wt. % silver, 5 to 25 wt. % copper, 10 to 25 wt. % gallium, and 0.1 to 5 wt. % indium and/or tin.
Patent DE-4319648-A1 (DE)
Title: Sulphidised catalyst containing platinum on activated charcoal
Inventor: BARTELS KARIN DR
IPC: B01J37/03
Filed: 1993-06-14
Abstract: The invention relates to a sulphidised catalyst containing platinum on activated charcoal, the activity of which can be considerably increased, with selectivity remaining constant, if an oxidising agent is added to the platinum-containing impregnation solution.
Patent DE-4323850-A1 (DE)
Title: Dual drive for bicycles
Inventor: SCHNEIDER HILDEGARD
IPC: B62M1/12
Filed: 1993-07-16
Abstract: The invention is based on the aim of linking the entire muscular system, by means of the dual drive, into energy conversion when riding a bicycle and also of making it possible for a person who is physically disabled in the region of the hip, leg or foot to ride the bicycle. Transmission of energy to the front and rear wheel is possible by means of a parallel leg and arm movement or by means of an alternative leg or arm movement. The steering device and drive of the front wheel form a mechanical and functional unit. The energy conversion for the front-wheel drive proceeds from the muscular power of the arms acting on the crank-shaped drive shaft of the steering device. The torque generated by this means is transmitted via a gear wheel and a drive chain to the drive of the hub of the front wheel. The predetermined, orthopaedic size and height of the cyclist can be matched to the operational sequence of the dual drive by displacing the saddle in the vertical and horizontal direction, taking account of ergonomical aspects.
Patent DE-4327159-A1 (DE)
Inventor: HAEHN REINHARD DR
IPC: A01K1/015
Filed: 1993-08-12
Abstract: A process is disclosed for producing sorbents based on betonites and cellulose-containing materials with a low bulk density and a high absorption power. The process is characterised in that a moist mixture of bentonite and crushed cellulose-containing primary raw materials is processed under an intense shearing action, then extruded and finally dried and granulated.